Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
A dork is a whale's penis.
327
Gorillas can catch human colds and other illnesses.
205
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The largest earthworm on record was found in South Africa and measured 22 feet.
151
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
Bats sleep 18-20 hours per day.
5